CN107675008B - A kind of preparation method of the big specification TC4 titan alloy casting ingots of low gap - Google Patents
A kind of preparation method of the big specification TC4 titan alloy casting ingots of low gap Download PDFInfo
- Publication number
- CN107675008B CN107675008B CN201710803402.9A CN201710803402A CN107675008B CN 107675008 B CN107675008 B CN 107675008B CN 201710803402 A CN201710803402 A CN 201710803402A CN 107675008 B CN107675008 B CN 107675008B
- Authority
- CN
- China
- Prior art keywords
- consutrode
- melting
- big specification
- ingot
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
Abstract
The invention discloses a kind of preparation method of the big specification TC4 titan alloy casting ingots of low gap, specific technical solution is：Corresponding raw material is selected by TC4 alloying components, it matches and weighs, the raw material prepared is uniformly mixed by mixing material distributing machine automatically, it is pressed into big specification entirety consutrode using ten thousand tons of hydraulic presses, melting obtains an ingot casting, group two ingot castings of weldering obtain secondary consutrode, and melting obtains secondary ingot casting, and melting again obtains finished product ingot casting.It is an advantage of the invention that：By preparing whole consutrode and three times vacuum consumable smelting, the big specification TC4 titan alloy casting ingot metallurgical qualities for solving existing technology of preparing production are unstable, and the high problem of interstitial element content ensure that big specification TC4 titan alloy casting ingot metallurgical qualities.
Description
Technical field
The invention belongs to titanium alloy material processing technique fields, and in particular to a kind of big specification TC4 titanium alloy castings of low gap
The preparation method of ingot.
Background technology
TC4 alloys were initially succeeded in developing by the U.S. in 1954, were had developed into a kind of international titanium alloy at present, were
People study it the most comprehensive, titanium alloy the most deep at present, have been obtained extensively in the industry such as Aeronautics and Astronautics, civilian
Using.TC4 titanium alloys have good room temperature and mechanical behavior under high temperature, are widely used in manufacturing various aerospace components and boat
The fan blade of empty engine, compressor disc and aerospace craft pressure vessel, structural member etc., have accounted for titanium alloy total output
50% or more.The alloy is a kind of good alpha and beta titanium alloy of comprehensive performance, has good process plastic and superplasticity, alloy
Alpha+beta/beta transus temperature is between 980 ~ 1010 DEG C, and Long-term service temperature is up to 400 DEG C, generally in annealing or solid solution aging shape
It is used under state, room temperature tensile intensity >=895MPa.
The alloy is that the titanium that current use scope is most wide, usage amount is maximum, technology is the most ripe in China's Aviation Industry closes
The aero-engine of gold, current nearly all model has application.With the integration and enlargement of aero titanium alloy structural member,
The diameter of rod that forging part needs has reached 600mm or more, and the increase of ingot casting specification makes its homogeneity of ingredients and yield rate
It is affected, conventional TC4 titan alloy casting ingots finished diameter is generally no greater than 1000mm, and ingot casting yield rate is not high, Wu Faman
The materials demand of sufficient China's aerospace large forgings.
Invention content
The object of the present invention is to provide a kind of preparation methods of the big specification TC4 titan alloy casting ingots of low gap, pass through this technology
Scheme can solve existing titan alloy casting ingot uneven components, and interstitial element content is high, and ingot casting specification is smaller, and metallurgical quality is not
The problems such as stablizing.
The present invention is achieved by the following technical solutions：
Step 1: using 0 grade of titanium sponge, commercial-purity aluminium, Al-V intermediate alloys as raw material, according to TC4 alloy nominal compositions Ti-
6Al-4V weighs the raw material, on automatic material weighing mixing system after mixing, is directly compressed into using ten thousand tons of hydraulic presses whole
Body electrode block；
Step 2: will be melted behind overall electrode block upper surface and the starting the arc of auxiliary electrode lower face in vacuum consumable electrode arc furnace
Change, connection obtains a consutrode；
Step 3: being vacuumized in vacuum consumable electrode arc furnace, until vacuum degree is not more than 2Pa, melting electric current is 20 ~ 32KA,
Melting voltage is 31 ~ 36V, and exchange stabilising arc electric current carries out melting, furnace cooling under conditions of being 6A ~ 11A to a consutrode
After obtain an ingot casting；
Step 4: an ingot casting described in two step 3 in vacuum drying oven weld in stove after lathe is handled,
Secondary consutrode is obtained, welding current is 3 ~ 8KA, 23 ~ 27V of voltage in the stove；
Step 5: secondary consutrode described in step 4 is placed in vacuum consumable electrode arc furnace, it is not more than in vacuum degree
1Pa, melting 24 ~ 35KA of electric current, under conditions of melting 32 ~ 37V of voltage, exchange stabilising arc electric current 7 ~ 12A to secondary consutrode into
Row melting obtains secondary ingot casting after furnace cooling；
Step 6: the secondary ingot casting described in step 5 is placed in vacuum consumable electrode arc furnace, after lathe is handled true
Reciprocal of duty cycle is not more than 0.5Pa, melting 29 ~ 40KA of electric current, melting 34 ~ 40V of voltage, to three under conditions of exchange stabilising arc electric current 8 ~ 13A
Secondary consutrode carries out melting, and titanium alloy finished product ingot casting is obtained after furnace cooling.
The features of the present invention also characterized in that：The purity of titanium sponge described in step 1 is not less than 99.65%, the matter of commercial-purity aluminium
It measures purity and is not less than 99.95%, and the quality purity of Al-V intermediate alloys is not less than 99.8%.
The size specification of titanium sponge described in step 1 in 0.83 ~ 25.4mm, the particle size range of commercial-purity aluminium 0.5 ~
10mm, and the particle size range of Al-V intermediate alloys is in 0.05 ~ 10mm.
Automatic material weighing mixing system described in step 1 has an automatic weighing function, titanium sponge, fine aluminium grain and intermediate alloy
Cloth, batch mixing are automatically performed all by computer by the technology controlling and process of setting in totally-enclosed system, avoid artificial and environment pair
The influence of material composition and alloy uniformity ensures electrode quality.
Using the overall electrode block of ten thousand tons of hydraulic presses compacting described in step 1, need first to squeeze out monolithic electricity in a mold
Pole block, for single-piece electrode block weight in 100 ~ 200Kg, then mixed alloy material is added on single-piece electrode block top in a mold, more
It is secondary to repeat the above steps, until obtaining complete consutrode.
The overall electrode block suppressed using ten thousand tons of hydraulic presses described in step 1 is needed and is existed with trade mark auxiliary electrode
Welding in vacuum consumable electrode arc furnace, and the splashings of welding generation and overlap are removed.
Step 3: ingot casting tapping temperature is less than 300 DEG C after furnace cooling described in five, six.
TC4 titanium alloys are 3 in vacuum arc furnace melting number
Specific implementation mode
Carry out the specific technical solution that the present invention will be described in detail below by way of specific example.
Embodiment 1：This example prepares the preparation method of low gap TC4 titanium alloy large size ingot castings.
Step 1: using 0 grade of titanium sponge, commercial-purity aluminium, Al-V intermediate alloys as raw material, Al-V intermediate alloys press V content 4%
Ratio is incorporated, and remaining aluminium content is added with fine aluminium particle shape formula, on automatic material weighing mixing system after mixing, using ten thousand tons
Hydraulic press is directly compressed into the overall electrode block of 450 × 5000 mm of φ；The quality purity of the titanium sponge is not less than 99.65%,
The quality purity of commercial-purity aluminium is not less than 99.95%, and the quality purity of Al-V intermediate alloys is not less than 99.8%.
Step 2: three consutrode blocks are tied together side by side, it will be on consutrode block in vacuum consumable electrode arc furnace
It is melted after end face and the starting the arc of auxiliary electrode lower face, welding obtains a consutrode, and the crucible for placing consutrode is straight
Diameter is 1050mm.
Step 3: being vacuumized in vacuum consumable electrode arc furnace, until vacuum degree is not more than 2Pa, melting electric current is 30KA, is melted
Refining voltage is 35V, and exchange stabilising arc electric current carries out melting to a consutrode under conditions of being 10A, one is obtained after furnace cooling
Secondary ingot casting, ingot casting tapping temperature are not higher than 300 DEG C.
Step 4: an ingot casting described in two step 3 in consumable electrode vacuum furnace weld in stove after lathe is handled
It connects, obtains secondary consutrode, welding current is 8KA, voltage 25V in the stove.
Step 5: secondary consutrode described in step 4 is placed in vacuum consumable electrode arc furnace, it is not more than in vacuum degree
1Pa, melting electric current 35KA carry out melting under conditions of melting voltage 37V, exchange stabilising arc electric current 12A to secondary consutrode, with
Furnace cooling but obtains secondary ingot casting afterwards, and ingot casting tapping temperature is not higher than 300 DEG C, and the crucible diameter for placing consutrode is
1150mm。
Step 6: secondary ingot casting described in step 5 is placed in vacuum consumable electrode arc furnace, it is not more than in vacuum degree
0.5Pa, melting electric current 38KA carry out melting under conditions of melting voltage 40V, exchange stabilising arc electric current 13A, with stove to secondary ingot casting
φ 1250mm finished product ingot castings three times are obtained after cooling, the crucible diameter for placing consutrode is 1250mm.
Embodiment 2：This example prepares the preparation method of TC4 titanium alloy large size ingot castings.
Step 1: using 0 grade of titanium sponge, commercial-purity aluminium, Al-V intermediate alloys as raw material, Al-V intermediate alloys press V content 4%
Ratio is incorporated, and remaining aluminium content is added with fine aluminium particle shape formula, on automatic material weighing mixing system after mixing, using ten thousand tons
Hydraulic press is directly compressed into the overall electrode block of 850 × 5000 mm of φ；The quality purity of the titanium sponge is not less than 99.65%,
The quality purity of commercial-purity aluminium is not less than 99.95%, and the quality purity of Al-V intermediate alloys is not less than 99.8%.
Step 2: will be melted behind consutrode block upper surface and the starting the arc of auxiliary electrode lower face in vacuum consumable electrode arc furnace
Change, welding obtains a consutrode, and the crucible diameter for placing consutrode is 950mm.
Step 3: being vacuumized in vacuum consumable electrode arc furnace, until vacuum degree is not more than 2Pa, melting electric current is 26KA, is melted
Refining voltage is 33V, and exchange stabilising arc electric current carries out melting to a consutrode under conditions of being 8A, obtained after furnace cooling primary
Ingot casting, ingot casting tapping temperature are not higher than 300 DEG C.
Step 4: an ingot casting described in two step 3 in consumable electrode vacuum furnace weld in stove after lathe is handled
It connects, obtains secondary consutrode, welding current is 6KA, voltage 25V in the stove.
Step 5: secondary consutrode described in step 4 is placed in vacuum consumable electrode arc furnace, it is not more than in vacuum degree
1Pa, melting electric current 30KA carry out melting under conditions of melting voltage 35V, exchange stabilising arc electric current 10A to secondary consutrode, with
Furnace cooling but obtains secondary ingot casting afterwards, and the crucible diameter for placing consutrode is 1050mm.
Step 6: by after the secondary ingot casting lathe processing described in step 5, it is placed in vacuum consumable electrode arc furnace, in vacuum
It spends and is not more than 0.5Pa, melting electric current 35KA, melting voltage 38V, to consutrode three times under conditions of exchange stabilising arc electric current 12A
Melting is carried out, the titanium alloy finished product ingot casting of φ 1150mm is obtained after furnace cooling.
Claims (5)
1. a kind of preparation method of the big specification TC4 titan alloy casting ingots of low gap, which is characterized in that this approach includes the following steps：
Step 1: using 0 grade of titanium sponge, rafifinal, Al-V intermediate alloys as raw material, according to TC4 alloy nominal compositions Ti-6Al-4V
The raw material is weighed, on automatic material weighing mixing system after mixing, using ten thousand tons of integral consumables of hydraulic press direct pressing
Electrode；The whole consutrode suppressed using ten thousand tons of hydraulic presses, needs to squeeze out single-piece electrode block in a mold, the monolithic electricity
Pole block weight is in 100 ~ 200kg, and then electrode block top adds mixed alloy material and continues to squeeze in a mold, is repeated several times straight
To the complete consutrode for obtaining meeting technological requirement；The purity of 0 grade of titanium sponge is not less than 99.65%, the purity of rafifinal
Not less than 99.95%, and the quality purity of Al-V intermediate alloys is not less than 99.8%；
Step 2: will be melted behind consutrode upper surface and the starting the arc of auxiliary electrode lower face in vacuum consumable electrode arc furnace, connect
Obtain a consutrode；
Step 3: being evacuated to vacuum degree in vacuum consumable electrode arc furnace is not more than 2Pa, melting electric current is 20 ~ 32kA, melting electricity
Pressure is 31 ~ 36V, and exchange stabilising arc electric current carries out melting to a consutrode under conditions of being 6A ~ 11A, obtained after furnace cooling
Ingot casting；
Step 4: an ingot casting described in two step 3 in vacuum drying oven weld in stove after lathe is handled, obtain
Secondary consutrode, welding current is 3 ~ 8kA, 23 ~ 27V of voltage in the stove；
Step 5: secondary consutrode described in step 4 is placed in vacuum consumable electrode arc furnace, it is not more than 1Pa in vacuum degree,
Melting 24 ~ 35kA of electric current, melting 32 ~ 37V of voltage melt secondary consutrode under conditions of exchange stabilising arc electric current 7 ~ 12A
Refining, obtains secondary ingot casting after furnace cooling；
Step 6: by described in step 5 secondary ingot casting lathe processing after, be placed in vacuum consumable electrode arc furnace, vacuum degree not
More than 0.5Pa, melting 29 ~ 40kA of electric current, melting 34 ~ 40V of voltage, to consumable three times under conditions of 8 ~ 13A of exchange stabilising arc electric current
Electrode carries out melting, and TC4 alloy finished product ingot castings are obtained after furnace cooling.
2. the preparation method of the big specification TC4 titan alloy casting ingots of low gap according to claim 1, which is characterized in that step
The size specification of 0 grade of titanium sponge described in one is in 0.83 ~ 25.4mm, and the particle size range of rafifinal is in 0.5 ~ 10mm, and in Al-V
Between alloy particle size range in 0.05 ~ 10mm.
3. the preparation method of the big specification TC4 titan alloy casting ingots of low gap according to claim 1, which is characterized in that step
Automatic material weighing mixing system described in one has an automatic weighing function, 0 grade of titanium sponge, rafifinal and Al-V intermediate alloys cloth,
Batch mixing is automatically performed all by computer by the technology controlling and process of setting in totally-enclosed system, avoids artificial and environment to raw material
The influence of ingredient and alloy uniformity ensures electrode quality.
4. the preparation method of the big specification TC4 titan alloy casting ingots of low gap according to claim 1, which is characterized in that step
The overall electrode suppressed using ten thousand tons of hydraulic presses in two is needed and is welded in vacuum consumable electrode arc furnace with trade mark auxiliary electrode
It connects, and the splashings of welding generation and overlap is removed.
5. the preparation method of the big specification TC4 titan alloy casting ingots of low gap according to claim 1, which is characterized in that step
Three, ingot casting tapping temperature is less than 300 DEG C after furnace cooling described in five.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710803402.9A CN107675008B (en) | 2017-09-08 | 2017-09-08 | A kind of preparation method of the big specification TC4 titan alloy casting ingots of low gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710803402.9A CN107675008B (en) | 2017-09-08 | 2017-09-08 | A kind of preparation method of the big specification TC4 titan alloy casting ingots of low gap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107675008A CN107675008A (en) | 2018-02-09 |
| CN107675008B true CN107675008B (en) | 2018-08-31 |
Family
ID=61135717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710803402.9A Active CN107675008B (en) | 2017-09-08 | 2017-09-08 | A kind of preparation method of the big specification TC4 titan alloy casting ingots of low gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107675008B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109022862A (en) * | 2018-10-26 | 2018-12-18 | 成都先进金属材料产业技术研究院有限公司 | A kind of preparation method of Ti-22V-4Al titan alloy casting ingot |
| CN109706332B (en) * | 2018-12-19 | 2020-09-11 | 西部超导材料科技股份有限公司 | Method for improving surface quality of titanium alloy ingot |
| CN109777980B (en) * | 2019-02-28 | 2021-03-30 | 陕西天成航空材料有限公司 | Method for reducing segregation of high-iron-content titanium alloy ingot |
| CN110791683A (en) * | 2019-12-18 | 2020-02-14 | 西安西工大超晶科技发展有限责任公司 | Method for improving mechanical property of cast titanium alloy |
| CN112609086B (en) * | 2020-11-16 | 2023-03-28 | 云南钛业股份有限公司 | Square billet for rolling large-coil-weight Ti-6Al-4V alloy wire rod at high speed and preparation method thereof |
| CN115121792A (en) * | 2022-06-17 | 2022-09-30 | 重庆金世利航空材料有限公司 | Preparation method for improving mixing uniformity of titanium alloy integral consumable electrode |
| CN117344166B (en) * | 2023-12-05 | 2024-03-08 | 成都先进金属材料产业技术研究院股份有限公司 | High-homogeneity titanium alloy cast ingot and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101003873A (en) * | 2007-01-19 | 2007-07-25 | 上海交通大学医学院附属第九人民医院 | Beta type Ti Nb Zr alloy with low modulus of elasticity, preparation method and application |
| CN101348876A (en) * | 2008-09-10 | 2009-01-21 | 西北有色金属研究院 | Low cost high strength titanium alloy |
| CN104513914A (en) * | 2014-12-23 | 2015-04-15 | 沈阳铸造研究所 | Cast titanium alloy with ultralow interstitial phase and high tenacity and casting method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5897830A (en) * | 1996-12-06 | 1999-04-27 | Dynamet Technology | P/M titanium composite casting |
-
2017
- 2017-09-08 CN CN201710803402.9A patent/CN107675008B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101003873A (en) * | 2007-01-19 | 2007-07-25 | 上海交通大学医学院附属第九人民医院 | Beta type Ti Nb Zr alloy with low modulus of elasticity, preparation method and application |
| CN101348876A (en) * | 2008-09-10 | 2009-01-21 | 西北有色金属研究院 | Low cost high strength titanium alloy |
| CN104513914A (en) * | 2014-12-23 | 2015-04-15 | 沈阳铸造研究所 | Cast titanium alloy with ultralow interstitial phase and high tenacity and casting method |
Non-Patent Citations (1)
| Title |
|---|
| 李小勇.TC4钛合金大规格铸锭及棒材生产工艺研究.《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》.2016, * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107675008A (en) | 2018-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107675008B (en) | A kind of preparation method of the big specification TC4 titan alloy casting ingots of low gap | |
| CN107177753A (en) | A kind of method for controlling big specification TC4 DT titan alloy casting ingot solidified structures | |
| CN102011026B (en) | Titanium alloy used for aviation fastener and manufacturing method | |
| CN103773981B (en) | A kind of method of smelting of high Nb-TiAl base alloy | |
| CN108277370B (en) | A kind of TC4 titanium alloy large size slab and the preparation method and application thereof | |
| CN104745872B (en) | A kind of high-temperature titanium alloy being applicable to use at a temperature of 650 DEG C | |
| CN104232994B (en) | A kind of preparation method of TC21 titanium alloy large size ingot casting | |
| CN104846225A (en) | Preparation method for high-uniformity WSTi62441S titanium alloy ingot | |
| CN106119606A (en) | A kind of WSTi45561 superhigh intensity titanium alloy and preparation method thereof | |
| CN107904413A (en) | A kind of shrinkage compensation method of raising TC4 casting head homogeneity of ingredients | |
| CN107022696B (en) | A kind of bio-medical metastable beta-type Zr-Nb alloy cast ingots and preparation method thereof | |
| CN105838922B (en) | A kind of aviation thermal strength titanium alloy ingot casting and preparation method thereof | |
| CN109487092A (en) | A kind of Ti6321 titan alloy casting ingot melting shrinkage compensation method | |
| CN104313363A (en) | Smelting method for titanium-niobium alloy ingot | |
| CN105925842A (en) | Manufacturing method for high-quality titanium alloy (BT6C) | |
| CN105925841B (en) | A kind of method for preparing the big alloy cast ingots of specification Ti 1023 | |
| CN106148739B (en) | A kind of preparation method of the alloy cast ingots of Ti3Al containing niobium | |
| CN110218910A (en) | A kind of novel powder high temperature alloy and preparation method thereof | |
| CN103667793A (en) | Method for smelting large-sized titanium-nickel-based shape memory alloy ingot | |
| CN104532059A (en) | Rare-earth containing high-temperature titanium alloy and preparation method thereof | |
| CN106244884B (en) | A kind of high intensity low density niobium alloy bar material and preparation method thereof | |
| CN102000806B (en) | Industrial preparation method of titanium alloy casting ingot with high niobium content | |
| CN107674989A (en) | A kind of overall preparation method of electrode for titanium alloy vacuum consumable smelting | |
| CN107245606B (en) | A kind of preparation method of Ti-Ni alloy large-scale casting ingot | |
| CN107739891B (en) | A kind of nickel molybdenum intermediate alloy is preparing the application in ErNiCrMo-3 alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 555, Headquarters Building, Longxing Town, Yubei District, Chongqing Patentee after: Chongqing Jinshili Aviation Materials Co., Ltd. Address before: Room 555, Headquarters Building, Longxing Town, Yubei District, Chongqing Patentee before: Chongqing Jin Shili Titanium Industry Co. Ltd |
|
| CP01 | Change in the name or title of a patent holder |